Jim:
The darn = signs really got in the way of deciphering your reply, but let me
add some observations in response to what you have suggested.
First, I should have pointed out in my original note that the outdoor
antenna performs just as expected on "receive". In other words, for
example, I can easily receive the National Weather Service Office
transmitter from Grand Rapids, Michigan (about 55 miles south of my house,
with no problem. I typically use that NWR transmitter and others to
initially diagnose things if I think I have some sort of an antenna problem.
I don't have a VHF dummy load available, but do have a magmount antenna that
I use for indoor operation when severe weather threatens. I tried that
antenna, and had the same problem. It occurred both on 2 meters and 440.
On the one hand, this indicates to me that my outdoor antenna may be ok, but
now I am more confused than ever about what the issue might be.
I can't imagine it would be with my RS35 power supply, since it does quite
well for me on HF with my TS590.
I suppose trying another power supply might help, but as I said before, I'm
trying to avoid having to tear apart the entire shack here! (smile)
Tom Behler: KB8TYJ
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Jim Gammon
Sent: Sunday, November 01, 2015 5:24 PM
To: [log in to unmask]
Subject: Re: Interesting TMV71A Issue
Tom=20have=20you=20ever=20used=20your=20finger,=20whoops,=20I=20mean=20a=20=
dummy=20load=20
instead=20of=20the=20outdoor=20antenna?=20Even=20though=20you=20che=E7ked=20
=
your=20SWR,=20
it=20might=20be=20good=20to=20try=20it=20on=20a=20dummyload=20before=20putt=
ing=20the=20
other=20rig=20into=20service.=20=20Have=20never=20had=20that=20issue=20with=
=20my=2071A=20
and=20Diamond=20antenna.=20=20Good=20luck,=20Jim=20WA6EKS
=20-----=20Original=20Message=20-----
From:=20Tom=20Behler=20<[log in to unmask]
To:[log in to unmask]
Date=20sent:=20Sun,=201=20Nov=202015=2018:17:59=20-0500
Subject:=20Interesting=20TMV71A=20Issue
Hi,=20everyone.
Well,=20last=20night,=20I=20got=20rid=20of=20the=20gremlin=20that=20was=20c=
ausing=20
issues=20with=20my
ability=20to=20play=20selected=20audio=20files=20using=20Winamp,=20but=20no=
w,=20
another=20gremlin
has=20appeared=20in=20my=20shack.
This=20time,=20I'm=20experiencing=20a=20very=20strange=20problem=20with=20m=
y=20
Kenwood=20TMV71A.
The=20problem=20occurs=20mainly=20when=20trying=20to=20transmit=20with=20hi=
gh=20power=20
on=20440,
but=20it=20happens=20occasionally=20when=20trying=20to=20do=20so=20on=202=20
=
meters=20as=20
well.
Basically,=20when=20I=20transmit=20with=20high=20power,=20especially=20on=20
=
440,=20
the=20rig=20shuts
off=20for=20a=20split=20second,=20but=20then=20comes=20back=20on.=20=20It's=
=20almost=20as=20
if=20the=20rig
is=20not=20happy=20transmitting=20on=20high=20power=20for=20some=20reason,=
=20again,=20
especially
on=20440.
I=20discovered=20this=20issue=20late=20this=20afternoon,=20as=20I=20was=20d=
oing=20my=20
usual=20monthly
tests=20of=20equipment,=20antennas,=20etc.,=20at=20least=20as=20best=20as=20
=
I=20can=20
from=20here=20in
the=20shack=20at=20the=20home=20QTH.
In=20trying=20to=20diagnose=20the=20problem,=20I=20have=20done=20the=20foll=
owing=20
things=20so=20far:
1.=20=20My=20first=20thought=20was=20that=20something=20has=20gone=20wrong=
=20with=20my=20
outdoor
Diamond=20X200=20VHF/UHF=20antenna,=20which=20is=20fed=20with=20RG9913=20co=
ax=20and=20
is=20on=20the
roof=20of=20my=20house=20at=20a=20height=20of=20approximately=2035=20feet.=
=20=20I=20took=20
SWR,=20as=20well
as=20forward=20and=20reflected=20power=20readings=20using=20my=20TW2.=20=20=
Both=20on=202=20
meters=20and
440,=20adjusting=20the=20meter=20for=20each=20gand=20as=20I=20went.=20=20my=
=20SWR's=20on=20
each=20gand=20are
between=201.2=20to=201=20and=201.3=20to=201.=20=20On=20medium=20power,=20my=
=20forward=20power=20
on=20each
band=20is=20between=209=20and=2010=20watts,=20and=20my=20reflected=20power=
=20is=20either=20
at=200=20watts
on=202=20meters,=20or=20point=202=20watts=20on=20440.
2.=20=20I=20then=20tried=20switching=20jumpers=20between=20my=20TW2,=20and=
=20the=20
Diamond=20X200
connection=20on=20my=20MFJ=20window=20feed=20through=20panel.=20=20Again,=20
=
no=20
change.
Admittedly,=20I=20haven't=20swapped=20all=20jumpers=20out,=20but=20at=20lea=
st=20the=20
initial
jumper=20swap=20didn't=20change=20the=20results.
3.=20=20I=20then=20did=20a=20V=20F=20O=20re-set=20on=20the=20TMV71A,=20with=
=20again,=20no=20
change=20in=20my
results.=20=20I'm=20a=20bit=20reluctant=20to=20do=20the=20full=20re-set,=20=
but=20may=20do=20
so=20as=20a=20last
resort,=20since=20I=20have=20the=20TMV71A=20programming=20cable,=20and=20al=
so=20have=20
all
memories=20and=20menu=20settings=20saved=20in=20a=20data=20file=20for=20the=
=20rig.
One=20other=20thing=20I=20might=20try=20is=20to=20see=20if=20this=20happens=
=20with=20the=20
TMV71A=20that=20I
typically=20use=20when=20camping=20out=20at=20the=20RV.=20=20It=20is=20here=
=20in=20my=20shack=20
in=20a=20box
for=20the=20winter.
Before=20I=20go=20too=20crazy=20with=20all=20this,=20though,=20I'd=20like=20
=
to=20know=20
whether=20anyone
else=20has=20experienced=20this=20issue,=20and=20if=20there=20are=20other=20
=
ideas=20out=20
there=20that
I=20might=20want=20to=20try.
Thanks=20as=20always=20for=20the=20help.
Tom=20Behler:=20KB8TYJ
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